1 /* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 package com.android.server.usb.descriptors; 17 18 import com.android.server.usb.descriptors.report.ReportCanvas; 19 20 /** 21 * @hide 22 * An audio class-specific Midi Streaming Interface. 23 * see midi10.pdf section 6.1.2.1 24 */ 25 public final class UsbMSMidiHeader extends UsbACInterface { 26 private static final String TAG = "UsbMSMidiHeader"; 27 28 public UsbMSMidiHeader(int length, byte type, byte subtype, int subclass) { 29 super(length, type, subtype, subclass); 30 } 31 32 @Override 33 public int parseRawDescriptors(ByteStream stream) { 34 // TODO - read data memebers 35 stream.advance(mLength - stream.getReadCount()); 36 return mLength; 37 } 38 39 @Override 40 public void report(ReportCanvas canvas) { 41 super.report(canvas); 42 43 canvas.writeHeader(3, "MS Midi Header: " + ReportCanvas.getHexString(getType()) 44 + " SubType: " + ReportCanvas.getHexString(getSubclass()) 45 + " Length: " + getLength()); 46 } 47 } 48
